Home / 10,189.13-15,261.10-7,831.76

Finding the Fourth Proportional to 10,189.13, 15,261.10 and 7,831.76

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Solution

The fourth proportional to 10,189.13, 15,261.10 and 7,831.76 is: 11,730.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,189.13 : 15,261.10 = 7,831.76 : x
  2. Step 2: Convert to fraction form
    10,189.13/15,261.10 = 7,831.76/x
  3. Step 3: Cross multiply
    10,189.13x = 15,261.10 × 7,831.76
  4. Step 4: Simplify right side
    10,189.13x = 119,521,176.65
  5. Step 5: Solve for x
    x = 119,521,176.65/10,189.13
  6. Step 6: Final answer
    x = 11,730.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.